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1963 Shelby Cooper Monaco King Cobra


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#101 dc-65x

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Posted 28 November 2020 - 01:46 PM

I really do like this car and I've been wanting to build it for years. It was fun to build and I especially love messing with motors. That said, it's long, skinny and the chassis is as stiff as a board so I'll cut it some slack in the handling department.  :laugh2:

 

Thanks to everyone following along and keeping me company with this build.   :victory:


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#102 Alchemist

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Posted 28 November 2020 - 03:07 PM

Thank YOU for sharing the build Rick!

 

Always a learning experience for me and also your builds are "spectacular" to view.

 

Such a privilege to see craftsmanship at this level.

 

Thanks again for sharing Rick!

 

Have a fantastic holiday season - looking forward to your next project (hint hint) LOL

 

Ernie


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#103 Isaac S.

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Posted 28 November 2020 - 06:45 PM

On that note on a few of my back-heavy cars I have added some weight to the front and that has helped. Tire hop usually happens when either there is to much weight in the rear, tires are wrong or the tires have high spots. I would also try maybe rounding off the edges of your tires a touch more but yours do look fairly rounded. 


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#104 Isaac S.

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Posted 29 November 2020 - 05:26 PM

I was also wondering if you changed the gearing? The original was around 3.44/1 did you keep it the same? 


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#105 dc-65x

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Posted 29 November 2020 - 07:17 PM

Hi Isaac,

 

The RAM 426A is geared 3:1 and the RAM "hop up" 64P gear set for it is 3.08:1. I geared mine with Weldun 40/12 gears for 3.33:1. I thought I'd be using 42/12 but that was to tight a mesh.


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#106 Isaac S.

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Posted 29 November 2020 - 07:44 PM

Thanks for the great info! Makes sense to gear it a little more like the Ram. 


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#107 Regis4446

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Posted 07 December 2020 - 01:51 PM

Thank you for sharing

:clapping: 
Very nice achievement


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#108 Isaac S.

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Posted 10 April 2021 - 05:08 PM

Was reading this again and was wondering if you have tried silicones?

 

Sound like your urethanes have too much traction. In my experience both on a DC704A car I had a few years back and my current DC706 car you don't need much traction with so much weight directly on the axle.

 

The old tires (which are still soft and pliable but not nearly as grippy as modern urethanes) on my current car work fine and just have some tilting that is still controllable. I plan to radius the edges at some point which I think will make it even better.

 

The DC704A car had a Fred's Enterprise chassis and had similar problems that you have. Tried a pair of silicones and they worked well. Hooked up good but had slide in the corners with a short, smooth drift. 

 

I would just try it out and see if it work for you. If you don't have some that will work, I have a pair that might. Possibly. 


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#109 dc-65x

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Posted 10 April 2021 - 07:41 PM

Hi Isaac,

 

I have some silicones. I'll have to give them a try. Thanks for the tip.

 

Rick


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#110 Isaac S.

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Posted 10 April 2021 - 08:02 PM

Cool, AJ's silicone's last forever which is an added bonus.


Isaac Santonastaso





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